ZHCSPC5 October 2022 LM51231-Q1
PRODUCTION DATA
The device provides a power-good indicator (PGOOD) to simplify sequencing and supervision. PGOOD is an open-drain output and a pullup resistor between 5 kΩ and 100 kΩ can be externally connected. The PGOOD switch opens when the VOUT pin voltage is greater than the undervoltage threshold (VUVTH). The PGOOD pin is pulled down to ground when the VOUT pin voltage is less than VUVTH, UVLO is less than VUVLO, VCC is less than VVCC-UVLO, or during thermal shutdown. A 26-μs rising and 21-μs falling deglitch filter prevents any false pulldown of the PGOOD due to transients. The PGOOD pin voltage cannot be greater than VVOUT + 0.3 V